INDEX. 
811 
H. 
Heat, conduction of, by liquids, 637. 
Heat, specific, 591 ; of mixture, 604. 
Heer (0.). Contributions to the Fossil Flora of North Greenland, being a Description of the Plants 
collected by Mr. Edward Whymper during the Summer of 1867, 445. 
Holtenia, 701 (see Thomson). 
Hydrofluoric acid, 173. 
Hydrozoa, on a genus of fossil, 693 (see Duncan). 
J. 
Jenkins (H. M.) and Duncan (P. M.). On Palceocoryne, 693 (see Duncan). 
L. 
Leguat’s account of the Solitaire, 350. 
Lockyer (J. N.). Spectroscopic Observations of the Sun. — No. II., 425. 
Loewy (B.), &c. Sun-spots, 1 (see De La Rue). 
Loftusia, description of, 739. 
M. 
Magnetic declination at Bombay, solar variation of, 363. 
Magnetism, terrestrial, inequalities of, 413 (see Airy). 
Matthiessen (A.). Researches into the Chemical Constitution of Narcotine, and of its Products of 
Decomposition. — Part III., 661. 
and Wright (C. R. A.). Researches into the Chemical Composition of Narcotine, 
and of its Products of Decomposition.— -Part IV., 667. 
Melbourne telescope, 127. 
Mixtures, properties of, 591 (see Dupre). 
N. 
Narcotine, 661, 667 (see Matthiessen). 
Newton (A.) and Newton (E.). On the Osteology of the Solitaire or Didine Bird of the Island of 
Rodriguez, Pezophaps solitaria (Gmel.), 327. 
Nitroglycerine, experiments on the explosion of, 493. 
0 . 
Opium bases, fyc., 661 (see Matthiessen). 
Owen (R.). Description of the Cavern of Bruniquel, and its Organic Remains. — Part I. Human Re- 
mains, 517 ; Part II. Equine Remains, 535. 
On Fossil Remains of Equines from Central and South America referable to Equus con - 
versidens, E. tau, and E. arcidens, 559. 
